Patents by Inventor Kazuki NAIKI

Kazuki NAIKI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220239385
    Abstract: A communication device controls wireless communication depending on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process including reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a fourth reliability parameter serving as an indicator that indicates suitability of a situation of receiving the wireless signal.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220239386
    Abstract: A communication device controls wireless communications depending on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process includes reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a first reliability parameter serving as an indicator that indicates whether the first incoming wave itself is an appropriate detection target.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220239387
    Abstract: A communication device controls wireless communications dependent on radio propagation environments. The communication device includes a wireless communication section configured to receive wireless signals from another communication device, and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process. The measurement process includes reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals, wherein the reliability parameter includes a third reliability parameter serving as an indicator that indicates unsuitability of a combined wave for the first incoming wave.
    Type: Application
    Filed: April 19, 2022
    Publication date: July 28, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20220217534
    Abstract: An authentication system includes a first controller that performs wireless communication with a mobile terminal and a first authentication unit that executes authentication of the mobile terminal including ID authentication and code authentication through the wireless communication performed between the first controller and the mobile terminal. The first authentication unit executes the code authentication by determining whether a terminal-side calculation result obtained by the mobile terminal matches a controller-side calculation result obtained by the first controller. The authentication system further includes a second controller that communicates with the mobile terminal and a second authentication unit that applies encryption communication using a portion of the terminal-side calculation result and a portion of the controller-side calculation result to communication performed between the second controller and the mobile terminal and authenticates the encryption communication.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 7, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masanori KOSUGI, Satoshi MORI, Kenichi KOGA, Kazuki NAIKI
  • Patent number: 11356264
    Abstract: An authentication system includes an authentication unit that performs an authentication process between a first communication device and a second communication device when the first communication device and the second communication device communicate. The authentication unit performs the authentication process by transmitting authentication information from one of the first communication device and the second communication device to the other one, calculating the authentication information with an encryption code in each of the first communication device and the second communication device, and evaluating a calculation result. During a processing series in the authentication process, the authentication unit performs a first authentication based on part of the calculation result transmitted between the first and second communication device, and a second authentication based on another part of the calculation result transmitted between the first and second communication device.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: June 7, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki Naiki, Hiroaki Iwashita, Kenichi Koga, Yoshiyuki Oya, Yoshiki Oishi
  • Patent number: 11351962
    Abstract: An electronic key system determines that legitimate communication has been performed on the basis of conditions including that a measured distance from a ranging request unit to a ranging response unit measured on the basis of a ranging request signal and a ranging response signal is within a threshold range that is set on the basis of the distance from a communication area of a transmission antenna where an electronic key is determined to be located by a key location determination unit to one of either the ranging request unit or the ranging response unit that is provided in an on-board device.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: June 7, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Hiroaki Iwashita, Yoshiyuki Oya, Kazuki Naiki
  • Patent number: 11310663
    Abstract: An authentication system includes a first controller that performs wireless communication with a mobile terminal and a first authentication unit that executes authentication of the mobile terminal including ID authentication and code authentication through the wireless communication performed between the first controller and the mobile terminal. The first authentication unit executes the code authentication by determining whether a terminal-side calculation result obtained by the mobile terminal matches a controller-side calculation result obtained by the first controller. The authentication system further includes a second controller that communicates with the mobile terminal and a second authentication unit that applies encryption communication using a portion of the terminal-side calculation result and a portion of the controller-side calculation result to communication performed between the second controller and the mobile terminal and authenticates the encryption communication.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: April 19, 2022
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Masanori Kosugi, Satoshi Mori, Kenichi Koga, Kazuki Naiki
  • Publication number: 20220039182
    Abstract: Power consumption required for UWB communication is effectively suppressed. A control device includes: at least one BLE communication section configured to perform BLE communication with another communication device, the BLE communication being wireless communication compliant with BLE communication standards; at least one UWB communication section configured to perform UWB communication with the another communication device, the UWB communication being wireless communication compliant with UWB communication standards; and a control section configured to control the BLE communication of the BLE communication section and the UWB communication of the UWB communication section, and the control section performs control to start the UWB communication in a case where the BLE communication has been established.
    Type: Application
    Filed: June 14, 2021
    Publication date: February 3, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Kenichi KOGA
  • Publication number: 20220029744
    Abstract: Retry related to wireless communication is realized more efficiently. A control device includes a wireless communication unit that has at least two antenna elements and performs wireless communication with another communication device, and a control unit that controls a control target device on the basis of a direction of the other communication device that is estimated by using the wireless communication, in which the control unit determines whether or not retry of the wireless communication is necessary on the basis of a status in which the wireless communication unit receives a signal from the other communication device.
    Type: Application
    Filed: June 14, 2021
    Publication date: January 27, 2022
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Kenichi KOGA
  • Publication number: 20210258085
    Abstract: [Object] To provide a mechanism that makes it possible to control wireless communication depending on radio propagation environments. [Solution] A communication device comprising: a wireless communication section configured to receive wireless signals from another communication device; and a control section configured to control a repetition process of repeatedly executing a measurement process on a basis of a reliability parameter calculated through the measurement process, the measurement process including reception of the wireless signals and calculation of the reliability parameter serving as an indicator that indicates whether a first incoming wave is an appropriate process target, the first incoming wave being a signal detected as a signal that meets a predetermined detection standard among the received wireless signals.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20210258716
    Abstract: [Object] To provide a mechanism that makes it possible to control a process of determining a position in accordance with a radio propagation environment. [Solution] A communication device comprising: a wireless communication section configured to receive wireless signals from another communication device; and a control section configured to calculate a reliability parameter serving as an indicator that indicates whether a first incoming wave serving as a signal detected as a signal that meets a predetermined detection standard is an appropriate process target, among the wireless signals received by the wireless communication section, and control a positional parameter determination process of determining a positional parameter indicating a position of the other communication device on a basis of the first incoming wave, on a basis of the reliability parameter.
    Type: Application
    Filed: January 29, 2021
    Publication date: August 19, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yoshiki OISHI, Satoshi MORI, Kenichi KOGA, Tatsuya KOIKE, Kazuki NAIKI
  • Publication number: 20210011143
    Abstract: A distance measurement system includes communication units arranged in a communication subject. The communication units form different radio wave transmission paths in accordance with a location of a communication device, and are configured such that when one of the radio wave transmission paths is blocked, communication with the communication device is enabled by another one of the radio wave transmission paths. The distance measurement system further includes a distance measurement unit that measures the distance between the communication device and the communication subject using one of the radio wave transmission paths by performing distance measurement communication that transfers a distance measurement signal between the communication units and the communication device.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 14, 2021
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Hiroaki IWASHITA, Satoshi MORI, Kenichi KOGA, Yoshiyuki OYA, Masateru FURUTA, Masanori KOSUGI
  • Publication number: 20200374122
    Abstract: An authentication system includes an authentication unit that performs an authentication process between a first communication device and a second communication device when the first communication device and the second communication device communicate. The authentication unit performs the authentication process by transmitting authentication information from one of the first communication device and the second communication device to the other one, calculating the authentication information with an encryption code in each of the first communication device and the second communication device, and evaluating a calculation result. During a processing series in the authentication process, the authentication unit performs a first authentication based on part of the calculation result transmitted between the first and second communication device, and a second authentication based on another part of the calculation result transmitted between the first and second communication device.
    Type: Application
    Filed: February 28, 2019
    Publication date: November 26, 2020
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazuki NAIKI, Hiroaki IWASHITA, Kenichi KOGA, Yoshiyuki OYA, Yoshiki OISHI
  • Publication number: 20200084625
    Abstract: An authentication system includes a first controller that performs wireless communication with a mobile terminal and a first authentication unit that executes authentication of the mobile terminal including ID authentication and code authentication through the wireless communication performed between the first controller and the mobile terminal. The first authentication unit executes the code authentication by determining whether a terminal-side calculation result obtained by the mobile terminal matches a controller-side calculation result obtained by the first controller. The authentication system further includes a second controller that communicates with the mobile terminal and a second authentication unit that applies encryption communication using a portion of the terminal-side calculation result and a portion of the controller-side calculation result to communication performed between the second controller and the mobile terminal and authenticates the encryption communication.
    Type: Application
    Filed: August 30, 2019
    Publication date: March 12, 2020
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masanori KOSUGI, Satoshi MORI, Kenichi KOGA, Kazuki NAIKI
  • Publication number: 20190256047
    Abstract: An electronic key system determines that legitimate communication has been performed on the basis of conditions including that a measured distance from a ranging request unit to a ranging response unit measured on the basis of a ranging request signal and a ranging response signal is within a threshold range that is set on the basis of the distance from a communication area of a transmission antenna where an electronic key is determined to be located by a key location determination unit to one of either the ranging request unit or the ranging response unit that is provided in an on-board device.
    Type: Application
    Filed: October 25, 2017
    Publication date: August 22, 2019
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Hiroaki IWASHITA, Yoshiyuki OYA, Kazuki NAIKI